drill
Which drill to use when? HSS-R drills are roll and roll drills for steel, cast steel, malleable cast iron, graphite, aluminum and brass. The advantages are increased break resistance and good chip evacuation. HSS-G drills with a ground drill tip are suitable for steel, cast steel, malleable cast iron, graphite, aluminum and brass. The advantages over HSS-R are higher accuracy, long service life and that they are self-centering. HSS-TiN drills have a titanium coating and can be used for steel and non-ferrous metals. & Nbsp; HSS-TiN drills are also characterized by their high concentricity.